Flood protection (part 2)

[Phoenix_Down]

Here is the code I'm using:

    $flood = mysql_query("select timestamp from guestbook_entries WHERE ip='$ip'", $dbi);

list($time2) = mysql_fetch_row($flood);

echo $time2;
echo "<br>";
echo time();

if ($time2 < time() - 60) {
        die("<br /><br />You cannot post within 60 seconds of another post<br />Go <a href=\"some/url\">Home</a>");
}

Whatever I do, it always shows this:

1048008263
1048009637

You cannot post within 60 seconds of another post
Go Home

Please help me fix this.

Thank you so much.